关键词: 诚信限度, 个体理性, 根本利益, 社会正义

Abstract: As a virtue or norm, honesty is not of absolute universality but of its own limits. It finds itself at least in such three limits as of individual reasoning, of fundamental interests, and social justice. Societies must not require honesty of people who are lack of the least necessary ability of rational action. Honesty cannot settle down between two parties with their every different interests, especially with their conflicting fundamental interests. Justice is one of important boundaries within which honesty ought to serve. Honesty beyond justice, as it is of self-betrayal and self-denial, is not honesty proper. It is for the sake of more appropriate requirement for other people's honesty and more reasonable practice of one's own honesty to realize its limits in depth.

Key words: limits of honesty, individual reasoning, fundamental interests, social justice